Quilt users: At what temp do you switch to a mummy bag?

[MG08]

Hello everyone and may this year be the best ever for all of us.

At about what temperature do experienced quilt users switch to a mummy bag? I've used a WM Kodiak with 4 oz overfill (direct from WM) for 0-25 degrees for a few years and always slept warm and comfortable (XTherm max, always in winter). But now past age 65 I want more wiggle room.

I'm looking at a Katabatic Flex 5 (or Flex 15 with 2 oz overfill) but I can't help thinking that temps below 20 really need a mummy bag for warm, restful (key word) sleep. I'd use Katabatic's Crestone down hood or Goosefeet Gear's down hood (not sure which yet). But ... I'm absolutely not willing to consider any other quilt than Katabatic, even at their prices (having seen and handled a Flex in person already)

Here's my issue: I'd feel awfully foolish if halfway through the first 10 degree night I kept telling myself, "I knew I shoulda stuck with the Kodiak! What the heck was I thinking!"

Appreciate all relevant experience and suggestions.

 

[sndmn11]

Teens. I have a Kodiak and whatever the lower rating Western .mountaineering quilt is. Astralite?

 

[ianpadron]

If I see temps in the teens I'm rocking the mummy bag. My 5 degree WM bag is significantly warmer than my 0 degree EE quilt. I'd be comfortable taking the 5 down into the negatives, quilt got chilly around 15 or so. I'm a hot sleeper and only wear baselayers...but needed a puffy on the night I decided the quilt wasn't the right tool.

I've used a quilt 90% of the last decade so know all about how to maximize their efficiency, no user error when I was cold (pad, sizing, sleep clothes, draft control, etc )

 

[justinspicher]

I switched from a quilt to a bag when I found out about the Sierra Designs backcountry bed. It’s a combo of both. I use it exclusively now if I’m staying out overnight. I went with a bigger/longer size so that I could layer inside of it.

 

[MG08]

Thanks sndmn11.

 

[MG08]

If I see temps in the teens I'm rocking the mummy bag. My 5 degree WM bag is significantly warmer than my 0 degree EE quilt. I'd be comfortable taking the 5 down into the negatives, quilt got chilly around 15 or so. I'm a hot sleeper and only wear baselayers...but needed a puffy on the night I decided the quilt wasn't the right tool.

I've used a quilt 90% of the last decade so know all about how to maximize their efficiency, no user error when I was cold (pad, sizing, sleep clothes, draft control, etc )

Ian;

What do you use for head gear in the quilt when it's cold, and do you think the attached hood on the WM bag is what makes the bag warmer than the quilt with separate head gear (down hood, merino balaclava, etc)?

Thanks.

 

[ianpadron]

Ian;

What do you use for head gear in the quilt when it's cold, and do you think the attached hood on the WM bag is what makes the bag warmer than the quilt with separate head gear (down hood, merino balaclava, etc)?

Thanks.

I typically wear a beanie and fleece neck gaiter if it's really cold. I don't think it's the lack of hood as my core and legs get chilled before my noggin.

When really cold in the quilt I typically have it pulled entirely over my head aside from a small hole to breathe. I'm a side sleeper and the bag is extra long, extra wide fwiw.

 

[Fins_N_Tines]

around 32 degrees. If temps will be variable up and down around freezing, I will just use my 40-degree quilt with puffy pants and jacket. Once temps are going to be consistently at or below freezing I'm going to a 15- or 20-degree high end mummy sleeping bag with a comfort rating.

 

[Drenalin]

I've only used quilts to the mid-teens, but I don't have any qualms about taking them down to those temps. I got nervous about it on one trip and used a wide mummy bag, didn't like it, went right back to the quilt after that. I always sleep in base layers, and in the cold I wear a fleece neck gaiter and beanie. I've also kept a hooded midlayer on and pulled that hood up over the beanie and gaiter.

 

[sndmn11]

When really cold in the quilt I typically have it pulled entirely over my head aside from a small hole to breathe. I'm a side sleeper and the bag is extra long, extra wide fwiw.

This is my game too @MG08 . I stuff the draft collar thingy in a U around my chin and up the sides of my face. I wear a merino first lite balaclava. I have slept in it colder and I just put my clothes and puffy on between me and the pad; still sleeping in my undies/base. I am pretty convinced that people struggle in sleeping bags by over insulating, sweating, venting, wet makes cold, and then it's back and forth discomfort.

 

[Miflatlander91]

I’ve gone down to around the low teens in mine but I was not in just baselayers. Below 25-30 I’ll pull out the mummy bag if it’s warmer than that I’ll sweat in the bag.


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[5MilesBack]

But now past age 65 I want more wiggle room.

I can't help thinking that temps below 20 really need a mummy bag

You're not going to get any wiggle room with a mummy bag. I can't use those things.....ever. I move too much, or should say "I NEED to move" while sleeping. But I'm 6'6" so feel claustrophobic in anything smaller than an oversized rectangular bag.......or the quilt. But I also don't backpack camp when the temps are below the teens. In my wall tent I can use my giant bag.

 

[CJF]

If the majority of the night is below freezing then I'm in a mummy bag. 30-35 I'm layering well with the quilt.

My quilt is a 20 degree thermarest and my mummy is 0 degree down bag. I've never found the limit of my bag since I mainly hunt archery season.

 

[owenseek24]

Hello everyone and may this year be the best ever for all of us.

At about what temperature do experienced quilt users switch to a mummy bag? I've used a WM Kodiak with 4 oz overfill (direct from WM) for 0-25 degrees for a few years and always slept warm and comfortable (XTherm max, always in winter). But now past age 65 I want more wiggle room.

I'm looking at a Katabatic Flex 5 (or Flex 15 with 2 oz overfill) but I can't help thinking that temps below 20 really need a mummy bag for warm, restful (key word) sleep. I'd use Katabatic's Crestone down hood or Goosefeet Gear's down hood (not sure which yet). But ... I'm absolutely not willing to consider any other quilt than Katabatic, even at their prices (having seen and handled a Flex in person already)

Here's my issue: I'd feel awfully foolish if halfway through the first 10 degree night I kept telling myself, "I knew I shoulda stuck with the Kodiak! What the heck was I thinking!"

Appreciate all relevant experience and suggestions.

I have a WM Sequioa 5 degree as well as the astralite quilt. I generally switch over to mummy bag anytime the temps drop below the high 20's. I can sleep lower than that (Low 20's) with the quilt but i find my quality of sleep lessens as i move around a lot and let air in underneath the quilt. That being said, I love my quilt for everything i can use it for, so light and packs so small.